1 Instituto Galego de F´ısica de Altas Enerx´ıas (IGFAE), Santiago de Compostela, Spain 2Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom 3 INFN-Sezione di Cagliari, Cagliari, Italy 4 INFN-Sezione di Napoli, Napoli, Italy 5Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom 6LPNHE, Sorbonne Universit´e, Universit´e Paris Diderot, CNRS/IN2P3, Paris, France 7 INFN-Sezione di Firenze, Firenze, Italy 8Laboratoire d’Annecy-le-Vieux de Physique Th´eorique , Annecy Cedex, France 9 Institute for Theoretical Particle Physics (TTP), Karlsruhe Institute of Technology, Kalsruhe, Germany 10Institute for Nuclear Physics (IKP), Karlsruhe Institute of Technology, Kalsruhe, Germany 11School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom 12INFN-Sezione di Frascati, Frascati, Italy 13Laboratoire de l’Accelerateur Lineaire (LAL), Orsay, France 14Instituto de Astrof´ısica de Canarias, La Laguna, Tenerife, Spain 15CERN, CH-1211, Geneva 23, Switzerland 16Physik-Institut, Universit¨at Z¨urich, Z¨urich, Switzerland

- Theoretical Physics Department, CERN, 1211 Geneva 23, Switzerland - PRISMA Cluster of Excellence & Mainz Institute for Theoretical Physics, Johannes Gutenberg University, 55099 Mainz, Germany - Centre for Mathematical Sciences, Plymouth University, PL4-8AA Plymouth, UK dJožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia - Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia - Instituto de Astrofísica de Canarias, C/ Vía Láctea, s/n E38205 - La Laguna (Tenerife), España - Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221,USA

1. Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain 2. Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain 3. Department of Physics, University of Warwick, Coventry CV4 7AL, UK 4. Center for Exoplanets and Habitability, University of Warwick, Coventry CV4 7AL, UK 5. Lund Observatory, Department of Astronomy & Theoretical Physics, Lund University, Box 43, SE-221 00 Lund, Sweden

(1) Instituto de Astronomía, UNAM, Mexico, (2) Instituto de Ciencias Nucleares, UNAM, Mexico, (3) IAC, Spain, (4) Dep. Astrofisica, ULL, Spain

Several institutions from North and South America and Europe (including IAC and ULL)